Feed-water heater.



D. T. WILLIAMS.

FEED WATER HEATER.

APPLICATION IILED nov. 14, 1912.

Patented Nov. 11, 1913.

3 SHEETS-SHEET 1.

COLUMBIA PLANOGRAPH c0.. WASHINGTON. D c.

D. T. WILLIAMS.

FEED WATER HEATER. APPLICATION FILED NOV. 14, 1912.

3 SHEETSSHBET 2.

l/yvmrole,

rm ramm PLANOGFIAPII C(L,\\'ASMINGTON. n. c.

Patented Nov. 11, 1913.

D. T. WILLIAMS.

FEED WATER HEATER.

APPLICATION FILED NOV. 14, 1912.

1,078,026, Patented Nov. 11, 1913.

3 SHEETSSHEET 3.

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ATTORNEY COLUMBIA PLANdGRAPH :0, WASHINGTON. D. c.

UNITED STATES PATENT, onnros.

DAVID '1. WILLIAMS, 0]? PATERS ON, NEW JERSEY, ASSIGNOR 0F ONE-HALF T0 FRANK I. CONNABLE, OF WILMINGTGN, DELAWARE.

FEED-WATER HEATER.

Patented Nov. 11, 1913.

Application filed November 14, 1912. I Serial No. 731,294.

To all whom it may concern Be it known that I, DAVID T. WILLIAMS,

ing the heat of the smoke and'gases passing through the smoke-box of a boiler of the locomotive class inheating the feed-water.

Its principal object is so to construct a svstem for conducting the water through the smoke-box as to permlt of ready access to the interior of the smoke-box for the purpose of inspection and repairs and yet obtain a.

feed-water heating system which shall be .a

thoroughly eflicient and reliable and-other wise practical adjunct of aboiler. 1

According to this invention, a feed-water heater is pivoted in the smoke-box so that its pivoting axis extends transversely of the.

smoke-box, the heater having a bearing at each point where said axis penetrates the wall of the smoke-box, and the inlet and outlet connections are connected with the heater respectively at said bearings. Preferably said axis is substantially coincident wit-h the central line of the heater and a diameter of the smoke-box, and the heaters area approximates as nearly as practicable the transverse area of the smoke-box where as its front-to-rear thickness is appreciably, less. Thus, while in working position (with one broad face forward) the heater exposes the maximum amount of surface to the heat of the smoke and gases flowing through the smoke-box, when turned ninety degrees (more or less) easy access to the interior of the smoke-box behind the heater is allowed. I further provide,backof the heater, an adjustable means for varying'at will the course of the smoke and gases with respect to the heater, so as to subject the heater tomore or less heat derived from such smoke and gases, according as the circumstances require.

The heater, per se, is further constructed in a way to obtain the maximum amount of radiating surface, to make it as strong and durable as possible, to facilitate the assembling of its various parts and their preservation in proper working order and to make it adaptable to various types of smoke-box constructions; p

In the accompanying. drawings, Figure 1 is a longitudinal vertical sectional view of a'locomotive boiler and smoke-box and of the improved feed-water heatingsystem, the

plane of the. section being slightly to the right of the pivoting axis of the heater; Fig.

l is a sectional view of the heater in a vertical plane through the innermost row (front to rear) of tubes; Fig. 2 is a view partly in front elevation and partly in section on liner-a; of'Fig. 1; Fig. 3 is a fragmentary ffron t elevation of the smoke-box and parts of thesystem; Fig. 4c is a front elevation of a casting forming a part of the heater; and,Fig.' -5 is afsectional view on line 3 y of Fig. 4:.

The boiler a, having the fines Z) and fluesheet o; smoke-box (Z; steam-pipe e leading from the boiler through the smoke-box; blast-pipef and petticoat-pipe g; deflectorplate It extending from the fiue-sheet'above the lines at a forward incline to a horizontal plane somewhat below the upper end of the blast-pipe, then forwardly in said plane and then downwardly at a forward incline; a screen i for permitting the gases and smoke from the lines, after having been deflected downwardly by the defiectonplate and so caused to enter chamber j (forward of said defiector-plate and screen) at the bottom thereof and to traverse the same before escaping at the opening is leading to the stack (not shown), are or may be all substantially thedsame as in constructions now commonly use To the. front of thesmoke-box is hinged the usual door Z adapted to be heldclosed by the cross-bar m which rests at its ends in the brackets a and afi'ords the necessary purchase for a bolt 0 penetrating the same and 'the door and having on its inner end a T- =head entered through -a slot in the crossbar and its outer end threaded and carrying the nut 0, provided with a lock-nut q, for

drawing'the door against its seat, all in a well-known manner. 7

'In the cylindrical wall of the smoke-box near its front end are arrangedthe diametrically opposed bearing members 1" and s to the former of which is attached the supply pipe t leading from any suitable means, such as an injector or feed water pump, for fore- I ing the water through the feed-water heating respectively prevent pressuregenerated :in" ,the heater from acting back toward the. in-

jector through pipe 25 .or the boiler steam escaping through pipe u should the heater burst or leak. Pip'e tmay have a branch t leading directly tothe boiler, said pipe and j its branch having valves 6 whereby the al- I trolled. The said members 1" and 8 receive ternative; feeding of thewater to the boiler, indirectly through pipe t and the heateror directly through branch 6, may be conthetubular trunnions ofthe heater now to be described; V The casting m (Fig. a) has an upright hollow body-portion and an upperand a lower pair ofhollow symmetrical arms, the arms of each pair projectinglaterally from said body-portion in opposite directions. The

. upper and lower arms at each side of said body-portion of the structure are connected by the rows of parallel tubeszy, there being in the present-case six rows (front to rear) of ten tubes each. The heateris di, vided into two; distinct circulating branches by a vertical wall 2 extending from top to bottom of the interior of-said body-portion of structure 00, ateach side of which is a seriesf(extending front to rear) of six vertical passages 2 each a complement of the passages of a row of tubes. The flow is upwardly through the foremost innermost passage (2), then downwardly through the next (same row), then alternately upwardly and V downwardly through the otherpassages of that row and finally up through the last;

then rearwardly to and down through the outermost passage of the next row, then alternately upwardly and downwardly through the remaining passages of that row, and finally down through the last thereof; then I rearwardly again, and so on through each row until allhave been traversed. 'To accomplish this the arms are provided with the longitudinal walls 3, each arranged in a plane between two rows of tubes, and with the transverse walls 1 arranged in each arm iniplanes between everytwo passages, the wallse of the upperarm being staggered relatively to those of the lower or' complementary arm; where the flow is rearwardly i from one to the next row of passages, as at the outer end of the upper arm and the base of the'body-portionof structure :20, ports. 5 and 6 (Figs. 2 and 1) are provided, and further, jsi-nce otherwise the flow through the rearmost passage 2 wouldbe downward instead of upward, the innermost tube of the last row is omitted and a port 2 provided to allow the water passing downwardly through the next innermost'tube to enter said passage 2 at the bottom thereof. Each half of the heater is a true counterpart of the other.

The expanding of the tubes in forming the joints between their ends and the arms where they are fitted into the latte may be accomfplished by removing the screw-plugs -7,

and s, which have suitable means, including the glands 12, forgiving the joints thus formed the character of stufiing-boxes. Each projection has a passage 13 (14:) leading through its trunnion to (from) the two passages 2 of the front (back) row of passages. Thus, water entering the lower passage 13 is divided, part going through one and part through the other of the aforesaid circulatingbranches, the two streams merging in passage 14. Each trunnion has its axis co incident with a line za constituting the balance-axis of the heater (passing also through its center of gravity in the present case), that is to say, a line with reference to which the inertia of the mass at one side thereof equals that of the mass at the other side thereof with respect to the forward and backward motion of the locomotive.

With the heater (whose area approximates that of the interior of the smoke-box, whereas its front-to-rear thickness is appreciably less, as shown) supported in hearings in the manner stated it will be apparent that whenever it is necessary to have access to the interior of the smoke-box for any purpose, having first swung the deflector 16 (hereinafter described) downwardly out of the way, the heater may be swung to a position more or less at right angles to that shown by solid lines in the drawings, leaving clearance at both sides of it for the workman to enter; to increase the room he may then swing the heater back to the normal position. When in use the heater may be held in the normal position by the clips 15 removably secured at some accessible point near the front of the smoke-box. The heater is placed sufiiciently near the front of the smoke-box so as not to in proximity to the forward portion of the deflector-plate h, the shafthaving an exterior arm 19 for turning it and the deflector to any desired position, to be there held in any suitable Way, as by a pin 20 passed through the arm and one of the holes of a curved bracket 21.

I claim:

1. In combination, With a smoke-box having an opening in the outer end thereof, a feed-Water heater pivotally arranged in the smoke-box and having its pivoting axis extending transversely of the smoke-box and substantially coincident with a line extending centrally through the heater.

2. In combination, with a smoke-box having an opening in the outer end thereof, a feed-water heater pivotally arranged in the smoke-box and having its pivoting axis extending transversely of the smoke-b0x and substantially coincident With the balanceaxis of the heater.

3. In combination, With a smoke-box having an opening in the outer end thereof, a feed-water heater pivotally arranged in the smoke-box and having its transverse area approximating the transverse area of the smoke-box and its front-torear thickness appreciably less than said area of the smokebox, the pivoting axis of the heater extending transversely of the smoke-box and substantially coincident With a line extending centrally through the heater.

I. In combination, With a smoke-box having an opening in the outer end thereof, a feed-Water heater pivotally arranged in the smoke-box and having its transverse area approximating the transverse area of the smoke-box and its front-to-rear thickness.

the balance-axis having a tortuous Water-conducting branch communicating atone end With the inlet and at the other with the outlet.

6. In a feed-Water heating system, a feed- Water heater having an inlet and an outlet arranged at opposite points thereof and sub-' stantially symmetrical tortuous water-conducting branches projecting laterally with reference to a straight line connecting said inlet'and outlet and each communicating at one end with the inlet and at theother end with the outlet. I

7. In a feed-water'heating system, a feed- Water heater having an inlet and an outlet arranged at opposite points thereofand substantially symmetrical portions projecting lateral-1y With reference to a straight line connecting said inlet and outlet andeach having a' tortuous water-conducting branch communicating atone end With'the inlet and at the other end With the outlet, each branch including a plurality of parallel rows of passages.

8. In combination, .With the boiler and smoke-box, the latter having an ,outlet for the smoke and gases entering the smoke-box from the boiler, a feedater heater arthe Wall of the smoke-box, and inlet and outlet connections connected With said heater respectively at the bearings thereof.

In testimony whereof I aflix my signature in presence of tWo Witnesses.

' DAVID T. WILLIAMS. Witnesses:

HENRY G. FELLOWS. .W. J. WALKER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.- 

